Home / 3,031.70-4,178.99-2,777.47

Finding the Fourth Proportional to 3,031.70, 4,178.99 and 2,777.47

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Solution

The fourth proportional to 3,031.70, 4,178.99 and 2,777.47 is: 3,828.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,031.70 : 4,178.99 = 2,777.47 : x
  2. Step 2: Convert to fraction form
    3,031.70/4,178.99 = 2,777.47/x
  3. Step 3: Cross multiply
    3,031.70x = 4,178.99 × 2,777.47
  4. Step 4: Simplify right side
    3,031.70x = 11,606,995.02
  5. Step 5: Solve for x
    x = 11,606,995.02/3,031.70
  6. Step 6: Final answer
    x = 3,828.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.